Adjustable indicator dial head for cash registers



J. W. MATTHEWS Jan. 14, 1964 ADJUSTABLE INDICATOR DIAL HEAD FOR CASH REGISTERS 4 Sheets-Sheet 1 Filed Jan. '7, 1963 3 c/ 6 M W W 2 INVENTOR. John W Mai/haw: flmM/e ATTORNEY.

Jan. 14, 1964 J. w. MATTHEWS ADJUSTABLE INDICATOR DIAL HEAD FOR CASH REGISTERS Filed Jan. '7, 1963 4 Sheets-Sheet 2 j INVENTOR. 7- Jab/7 W Ma/f/zea/s @wmzw z ATVTORNE Y.

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ADJUSTABLE INDICATOR DIAL HEAD FOR CASH REGISTERS Filed Jan. 7, 1963 4 Sheets- Sheet 4 him 72 :1;

liiiii ii mm 1.1m .ii A fi INVENTOR. Job/7 W Maff/zecw United States Patent C) 3,117,718 ADJUSTABLE INDICATOR DIAL HEAD FOR CASH REGISTERS John W. Matthews, Holland, Mich. Filed Jan. 7, 1963, Ser. No. 249,702 10 Claims. (Cl. 235-23) This invention relates to improvements in adjustable indicator dial head for cash registers. The principal objects of this invention are:

First, to provide an indicator dial head which will permit the numerals of items and totals entered into a cash register to be viewed from opposite sides and from various adjusted angular positions relative to the front or key board of a cash register.

Second, to provide an indicator dial actuating mechanism for cash registers which can be selectively rendered inoperative as when the store operator is taking the grand totals of a days business.

Third, to provide an angularly adjustable indicator dial head which can be added as an attachment or conversion to existing cash registers.

Fourth, to provide a novel indicator dial head and operating mechanism which has two sets of oppositely viewed dials with large numerals in close proximity and contained within a relatively narrow head space.

Fifth, to provide a novel form of indicator dial and actuating mechanism which has overlapping numeral discs rotating in the same general plane with drive shafts for the dials projecting through slots in overlapped dials to bring the visible numeral portions of the dials into close proximity.

Other objects and advantages of the invention Will be apparent from a consideration of the following description and claims. The drawings, of which there are four sheets, illustrate a highly practical form of the indicator dial mounting and driving mechanism mounted on a cash register of known construction. Many of the details and mechanisms of the cash register are omitted in order to clearly illustrate the mechanism.

FIG. 1 is a front elevational view of the cash register with the dial mechanism in head on conventional adjusted position.

FIG. 2 is a fragmentary vertical cross sectional view taken along the plane of the line 22 in FIG. 1 and showing an angularly adjusted position of the dial head in dotted lines.

FIG. 3 is an enlarged fragmentary longitudinal cross sectional view through the adjustable connection at the lower end of one of the dial operating push springs, the view being taken along the plane of the line 33 in FIG. 7.

FIG. 4 is a fragmentary top plan view of the indicator dial head.

FIG. 5 is a fragmentary cross sectional view of the dial position holding lock taken along the plane of the line 5-5 in FIG. 4.

'FIG. '6 is a fragmentary front elevational view of the front face of the dials with parts broken away to illustrate the operating mechanism and support.

FIG. 7 is a fragmentary horizontal cross sectional view taken along the plane of the line 7-7 in FIG. 2.

FIG. 8 is a fragmentary side elevational view of the cash register viewed from the left side and illustrating the dial lock-out mechanism.

FIG. 9 is a fragmentary top plan view of the dial lockout mechanism.

In many installations of cash registers such as selfservice stores where the customer approaches the cash register from the rear and side it is highly desirable from the standpoint of customer satisfaction for the customer ice to be able to see the amount charged and entered into the cash register for each item. This cannot be done when the customer is placing or watching items at the side of the cash register where the operator picks them up for checking and entering the price if the indicator dials face directly front and rear on the cash register. The customer must then crane his neck to the front or rear to see the dials which is embarrassing and often impossible to keep up with an operator who is rapidly entering or ringing up a large number of items. The present invention permits the indicator dial head of a cash register to be adjusted to a convenient angular position where the customer can view both the item the operator is holding and checking and also the price entered into the register for the item.

The drawing illustrates a cash register having a front panel 1 supported on side frames or plates 2 and provided with several columns of keys. The right column of keys 3 actuate department selectors for routing amounts and items into separate accumulators in the machine (not illustrated). 4 are the ones column keys, 5 the tens column keys, '6 the hundreds column keys, and 7 the thousands column keys. A manually operable crank 8 on a main operating shaft 9 is illustrated although conversion to automatic electric operation is an easy and well-known expedient.

Extending across the tops of the side plates 2 is a connecting platform 10 which supports the indicator dial frame 11 for angular rotation about a central pivot 12. The dial frame is of upwardly opening U-shaped cross section having a front wall 13 and rear Wall 14 with cross shafts 15 to 26 to be described in greater detail presently. The shafts support fiat disc-like dials also to be described and masks 27 with slots 28 therein are supported to the front and rear of the dials to expose only the selected numerals and indicia on the dials. 2 9 are carry pawl levers which do not enter into the operation of the invention except as they perform their normal function in the adding machine.

With particular reference to FIGS. 2 and 7, it Will be seen that each column of keys is associated with a counter disc 30 mounted on a shaft 31 and having a toothed sector 32 adapted to coact with the key depressed in its associated key column to determine the degree or amount of rotation of the disc when the main shaft is operated. Each disc 30 is connected by a link 33 to one of several cranks 34 to 39 pivoted on a cross shaft to rock the crank in proportion and corresponding to the key depressed in the associated key column. The central cranks 36 and 37 have forwardly projecting and slightly inwardly offset crank arms '41 while the cranks 35 and 33 have further offset arms 42 and the cranks 34 and 39 still further offset arms 43 so that the ends of the arms 41, 42 and 43 are all disposed centrally of the machine along a short are about the dial frame pivot 12.

As appears most clearly in FIG. 3, each of the crank arms 41 to 43 is pivotally connected to a link 44 having an upwardly projecting guide tip 45 with projecting ears 46. The ears 46' are threaded adjustably into the lower turns of push springs 47 to 52. The springs project upwardly at laterally divergent angles and are connected in thrust transmitting relation to six slide bars 53 to 58. The slide bars are slidably retained and guided under flanged studs 59 and have toothed rack portions 60 en gaged with gears on some of the shafts 15 to 26. As appears most clearly in FIGS. 4 and 6, the rack on slide bar 53 engages the gear 61 on shaft 26. Slide bar 54 engages a gear 62 on shaft 24. Slide bar 55 engages gear 63 on shaft 22. Slide bar 56 engages gear 64 on shaft 20. Slide bar 57 engages gear 65 on shaft 13 and slide bar 58 engages gear '66 on shaft =16. These shafts 16',

18, 20, 22, 24 and 26 also carry annular indicator discs 67, 68, 69, 70, 71 and 72, respectively. The discs have annular slots 73 with a single radial spoke 74- connected to their supporting shaft so that the shaft 1-6 to the department indicator dial projects through the slot in the ones dial 6%; etc. along the line of dials with each dial overlapping tle adjacent dial to the left. Each dial is rotatable less than 360 by the amount obstructed by the spoke of the dial with the shaft that passes through its slot. Numerals and indicia 75 are placed on the rims of the discs to appear through the slot 28 in the mask 27 as the dials are rotated.

In order to provide dials on the back side of the frame 11 and invert the drive thereto from the shafts 16, 18, 20, 22, 24 and 26, the frame 11 has cross bars 76 slidably supporting six transverse rack bars '77, 78, 79, 80, 81 and 82. The shaft 16 has a pinion 83 meshing with rack bar 77 while a pinion 84 on shaft 25 is driven the same rack bar. This rotates the right (when viewed from the right) disc 85 so that the same department indicia appears at the right when viewed from the front or the rear. Similarly, rack bar 78 is driven by pinion 86 on shaft 18 to drive pinion 87 and shaft 23 and the rear ones disc 88. The progression of the inverting drive from the front disc and its shaft through a transverse rack bar and pinions to the obverse disc is believed to be apparent without reciting each gear and rack train.

Each of the actuated links 33 and its connected spring and indicator disc are advanced by advancing motion of the shaft 31 which advances with advance rotation of the main shaft 9 and would normally retract with the main shaft in the normal operation of the adding machine. In order to prevent the indicator dials from advancing only momentarily to the figure or amount being entered and to hold the dials in advanced indicating position of the amount entered until a succeeding amount is entered, the dial indicator frame 111 is provided with a bail or yokelike lock 90 having a cross bar 91 engageable in the teeth of the transverse rack bars 77 to 82. The yoke is pivoted at 92 and the cross bar 91 connected to it is moved upwardly and downwardly by a spring 93 depending along the left side of the machine. The lower end of the spring is connected to and driven by a holding lever 94 pivoted at 95 (see FIGS. 8 and 9). The lever 94 and spring 93 are normally biased upwardly to disengage and unlock the yoke with the rack bars by a spring 96.

The lever 94- is held up at its front end by a crank shaped pawl 97 having a notch 8 in its upstanding arm that engages under a pin 99 on the lever. The pawl is urged counterclockwise into lever blocking engagement by the spring 100 so that any numerals or indicia on the dials remain visible. The main actuating shaft 9 of the adding machine has a crank arm 101 on its left end that oscillates with the shaft during item entry and total taking operation. The arm carries a pin 102 which on the first increment of clockwise rotation of the shaft and arm as viewed in FIG. 8 strikes the pivoted triangular one-way driving link 103 on the forward arm of the pawl 97. An ear 104 on the link 10.3 underlies the forward arm of pawl 97 preventing counterclockwise rotation of the link on the pawl so that the pawl 97 is depressed or rotated clockwise, disengaging the notch 98 from the pin 99. The spring 96 then operates to raise the rear of the lever 04 and the spring 93 so that the cross bar 91 and yoke 90 are disengaged from the rack bars 77 to 82 permitting the rack bars and associated dial operating mechanism to move to a new numeral indicating position in response to actuation of the discs 30 of the adding machine.

At the end of the clockwise item-entering motion of the shaft 9, the crank arm 101 strikes a pin 105 on the extreme front end of lever 94, thus raising the front and lowering the back of the lever. The first effect of this motion is to overcome the spring 96 and lower spring 93, tensioning it if necessary. The yoke 90 and cross bar 91 accordingly lock the rack bars '77 to 82 in their new adjusted positions. The second effect of this motion is that the spring 1100' draws the locking notch 90 of the pawl 97 back into blocking engagement with the pin 99. As the shaft 9, crank arm 101 and pin 102 return in counterclockwise rotation, the pin 102 strikes the triangular pawl 103 but the pawl is permitted to pivot against the tension of spring 1% so that the pin passes over it without relowering the crank 97 and the indicator dials remain locked in their new numeral indicating position.

At times it is not desirable for the dials 67 to 72, 85, etc. to operate. This situation arises when the store operator is taking department totals and grand totals showing the amount of business he has done as he may not want competitors or customers, or potential holdup men, to be able to see how much money he has taken in. Provision is made for rendering the numeral dials inoperative.

On the left side of the front key plate 1 is a key 107 which conditions the machine to bring up or indicate the totals in the several department accumulators on small totalizer dials (not shown) which are visible only to the machine operator. The push bar 108 on the left side of the machine conditions mechanism of a well known nature for performing this operation. The key 107 has a second push bar 109 which, when it is depressed as shown in full lines in FIG. 8, strikes and depresses one arm 110 of the crank 1 11. The other arm 112 of the crank is then swung up into blocking engagement with a pin 113 on the back or inner side of the lever 94 (see FIG. 9). The crank 111 and arm 112 then act to support the lever 94 in position to hold the yoke 90 and cross bar 91 in engagement with the rack bars 77 to 82. The discs 30 and cranks 36 operate in the usual fashion during the subtotal or departmental totaling operations but the flexibility of the push springs 47 to 52 permit the motion of these parts without actuating the slide bars 53 to 58 and the rack bars that remain locked by the yoke 90.

What is claimed as new is:

1. In combination with an adding machine having plural rows of item entering keys and disks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

an upwardly opening U-shaped dial frame pivotally connected to the top of the frame of the machine by a central upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting front ends of one set of shafts, rack bars slidably guide on the front side of said dial frame and meshing with said pinions,

said rack bars being inclined in downwardly converging relation toward the transverse position of said pivot,

a series of cranks rockably supported in said machine behind said disks and each connected to one of said disks by a link for oscillation thereby,

angularly off-set arms on said cranks converging to positions centrally of said machine under said rack bars,

push springs connected between the ends of said rack bars and the converged ends of said crank arms by adjustable connections having links with projecting ears threaded into said springs and pivoted on said crank arms,

transverse racks supported between the front and back of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks, a control member in the form of a stiff spring connected to raise and lower said lock-out member, a spring biasing said control member to rack releasing position, lever pivoted on the side of said machine and connected to said control member,

a crank oscillatable with said main shaft and engageable with said lever in the advanced position of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

a one way driving link pivoted on said holding crank and engageable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft,

and a lock pivoted on the side of said machine and movable into blocking engagement with said lever upon actuation of selected total taking mechanism of the machine independently of said holding crank.

2. In combination with an adding machine having plural rows of item entering keys and disks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

an upwardly opening U-shaped dial frame pivotally connected to the topof the frame of the machine by an upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting ends of one set of shafts, rack bars slidably guide on one side of said dial frame and meshing with said pinions,

said rack bars being inclined in downwardly converging relation toward the transverse position of said pivot,

a series of cranks rockably supported in said machine behind said disks and each connected to one of said disks by a link for oscillation thereby,

angularly off-set arms on said cranks converging to positions under said rack bars,

push springs connected between the ends of said rack bars and the converged ends of said crank arms by adjustable connections having links with projecting ears threaded into said springs and pivoted on said crank arms,

transverse racks supported between the front and back of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks,

a control member connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing position,

a lever pivoted on said machine and connected to said control member,

a crank oscillatable with said main shaft and engageable with said lever in the advanced position of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

a one Way driving link pivoted on said holding crank and engageable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft,

and a lock movable into blocking engagement with said lever upon actuation of selected total taking mechanism of the machine independently of said holding crank.

3. In combination with an adding machine having plural rows of item entering keys and disks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

a dial frame having spaced front and rear walls and pivotally connected to the top of the frame of the machine by an upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting ends of one set of shafts,

rack bars slidably guided on one side of said dial frame and meshing with said pinions,

a series of cranks rockably supported in said machine behind said disks and each connected to one of said disks by a link for oscillation thereby,

angularly off-set arms on said cranks converging to positions under said pivot,

push springs connected between the ends of said rack bars and the converged ends of said crank arms by adjustable connections having links with projecting ears threaded into said springs and pivoted on said crank arms,

transverse racks supported between the front and back walls of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks,

a control member connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing position,

a lever pivoted on said machine and connected to said control member,

a crank oscillatable with said main shaft and engageable with said lever in the advanced position of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

a one way driving link pivoted on said holding crank and engageable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft,

and a lock movable into blocking engagement with said lever upon actuation of selected total taking mechanism of the machine independently of said holding crank.

4. In combination with an adding machine having plural rows of item entering keys and disks oscillated with each actuation of the machine in response to the '2 keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

a dial frame having spaced front and rear walls and pivotally connected to the top of the frame of the machine by an upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting ends of one set of shafts,

rack bars slidably guided on one side of said dial frame and meshing with said pinions,

a series of cranks rockably supported in said machine behind said disks and each connected to one of said disks by a link for oscillation thereby,

angularly off-set arms on said cranks converging to positions under said pivot,

push springs connected between the ends of said rack bars and the converged ends of said crank arms by adjustable connections having links with projecting ears threaded into said springs,

transverse racks supported between the front and back walls of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks,

a control member connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing position,

a lever pivoted on said machine and connected to said control member,

a crank osciliatable with said main shaft and engageable with said lever in the advanced position of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

a one way driving link pivoted on said holding crank and engageable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft,

and a lock movable into blocking engagement with said lever upon actuation of selected total taking mechanism of the machine independently of said holding crank.

5. In combination with an adding machine having plural rows of item entering keys and disks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

an upwardly opening U-shaped dial frame pivotally connected to the top of the frame of the machine by a central upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting front ends of one set of shafts, rack bars slidably guided on the front side of said dial frame and meshing with said pinions,

said rack bars being inclined in downwardly converging relation toward the transverse position of said pivot,

a series of cranks rockably supported in said machine behind said disks and each connected to one of said disks by a link for oscillation thereby,

angularly off-set arms on said cranks converging to positions centrally of said machine under said rack bars,

push spring connected between the ends of said rack bars and the converged ends of said crank arms by adjustable connections having links with projecting ears threaded into said springs and pivoted on said crank arms,

transverse racks supported between the front and back of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lookout yoke member having a cross bar engageable with the teeth of said racks,

a control member in the form of a stiff spring connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing position,

a lever pivoted on the side of said machine and connected to said control member,

a crank oscillatable with said main shaft and engageable with said lever in the advanced position of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

and a one way driving link pivoted on said holding crank and engageable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advanc ing motion of said main shaft.

6. In combination with an adding machine having plural rows of item entering keys and disks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanisms comprising,

a dial frame having spaced front and rear walls and pivotally connected to the top of the frame of the machine by an upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting ends of one set of shafts, rack bars slidably guided on the front side of said dial frame and meshing with said pinions,

a series of 'cranks rockably supported in said machine and each connected to one of said disks by a link for oscillation thereby,

angularly off-set arms on said cranks converging to positions centrally of said machine under said pivot,

push spring connected between the ends of said rack bars and the converged ends of said crank arms,

transverse racks supported between the front and back of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks,

a control member connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing position,

a lever pivoted on the side of said machine and connected to said control member,

a crank oscillatable with said main shaft and engageable with said lever in the advanced positions of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

and a one way driving link pivoted on said holding crank and engageable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft.

7. An indicating dial assembly for an adding machine comprising,

a horizontally rotatably adjustable frame having spaced front and rear walls,

a first set of shafts journaled in said walls and projecting forwardly therefrom,

a second set of shafts journaled in said walls and projecting rearwardly therefrom,

all said shafts being in spaced parallel relation in a single plane,

front and rear sets of indicia dials mounted on the projecting ends of said shafts,

said dials being flat annular disks with segmental annular slots extending from a single radial spoke with the projecting ends of the shafts connected one to each of said spokes and with some shafts of each set projecting through the slots of adjacent dials,

the dials being overlapped and staggered outwardly from said walls,

rack bars slidable longitudinally between said walls,

pinions on said shafts engageable with said rack bars and arranged to drivingly connect the shaft of each dial on the front of said frame with the dial in the corresponding inverted position on the back side of said frame,

means including other pinions on one set of said shafts for actuating said dials in response to operation of the adding machine mechanism,

and a lock mechanism on said frame engageable with said rack bars and connectable to the operating mechanism of an adding machine to lock said bars and dials at the end of an item entering operation of the machine.

8. An indicating dial assembly for an adding machine comprising,

a horizontally rotatably adjustable frame having spaced front and rear walls,

a first set of shafts journaled in said walls and projecting forwardly therefrom,

a second set of shafts journaled in said walls and projecting rearwardly therefrom,

front and rear sets of indicia dials mounted on the projecting ends of said shafts,

said dials being flat annular disks with segmental a-nnular slots extending from a single radial spoke with the projecting ends of the shafts connected one to each of said spokes and with some shafts of each set projecting through the slots of adjacent dials,

the dials being overlapped and staggered outwardly from said walls,

rack bars slidable longitudinally between said walls,

pinions on said shafts engageable with said rack bars and arranged to drivingly connect the shaft of each dial on the front of said frame with the dial in the corresponding inverted position on the back side of said frame,

means for actuating said dials in response to operation of the adding machine mechanism,

and a lock mechanism on said frame engageable with said rack bars and connectable to the operating '10 mechanism of an adding machine to lock said bars and dials at the end of an item entering operation of the machine.

9. In combination with an adding machine having plural rows of item entering keys and cranks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

a dial frame having spaced front and rear walls and pivotally connected to the top of the frame of the machine by an upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting ends of one set of shafts,

rack bars slidably guided on one side of said dial frame and meshing with said pinions,

angularly off-set arms on said cranks converging to positions under said pivot,

push springs connected between the ends of said rack bars and the converged ends of said crank arms by adjustable connections having links with projecting ears threaded into said springs and pivoted on said crank arms,

transverse racks supported between the front and back wall of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks,

a control member connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing position,

a lever pivoted on said machine and connected to said control member,

a crank oscillatable with said main shaft and engageable with said lever in the advanced position of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

a one way driving link pivoted on said holding crank and enga-geable with said crank on said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft,

and a lock movable into blocking engagement with said lever upon actuation of selected total taking mechanism of the machine independently of said holding crank.

10. In combination with an adding machine having plural rows of item entering keys and cranks oscillated with each actuation of the machine in response to the keys depressed and an oscillatory main drive shaft, item indicating dial mechanism comprising,

a dial frame having spaced front and rear walls and pivotally connected to the top of the frame of the machine by an upright pivot,

two sets of dial shafts supported by the sides of said frame with one set projecting forwardly and the other set projecting rearwardly,

annular indicia dials mounted on the projecting ends of said sets of shafts with each dial having a single radial spoke and with the ends of some shafts projecting through the annular slot in adjacent dials and with the dials in each set overlapping,

pinions on the projecting ends of one set of shafts,

rack bars slidably guided on the front side of said dial frame and meshing with said pinions,

angularly off-set arms on said cranks converging to positions centrally of said machine under said pivot,

push spring connected between the ends of said rack bars and the converged ends of said crank arms,

transverse racks supported between the front and back of said dial frame,

pinions on said shafts meshing with said racks to simultaneously actuate said dials on the front and back of said dial frame in inverted positions of the dials,

a lock-out yoke member having a cross bar engageable with the teeth of said racks,

a control member connected to raise and lower said lock-out member,

a spring biasing said control member to rack releasing 20 position, a lever pivoted on the side of said machine and connected to said control member,

a crank os'cillatable with said main shaft and engageable with said lever in the advanced positions of said main shaft to move said lever and lock-out member to rack locking position,

a holding crank member spring biased into holding engagement with said lever in the rack locking position of said lever,

and a one Way driving link pivoted on said holding crank and engageable with said crank 011 said main shaft at the start of advancing motion of the main shaft crank to release said holding crank whereby said racks are released for movement during advancing motion of said main shaft.

References Cited in the file of this patent UNITED STATES PATENTS 473,555 Johns Apr. 26, 1892 1,037,917 Jacob Sept, 10, 1912 1,936,927 Arnold Nov. 28, 1933 

1. IN COMBINATION WITH AN ADDING MACHINE HAVING PLURAL ROWS OF ITEM ENTERING KEYS AND DISKS OSCILLATED WITH EACH ACTUATION OF THE MACHINE IN RESPONSE TO THE KEYS DEPRESSED AND AN OSCILLATORY MAIN DRIVE SHAFT, ITEM INDICATING DIAL MECHANISM COMPRISING, AN UPWARDLY OPENING U-SHAPED DIAL FRAME PIVOTALLY CONNECTED TO THE TOP OF THE FRAME OF THE MACHINE BY A CENTRAL UPRIGHT PIVOT, TWO SETS OF DIAL SHAFTS SUPPORTED BY THE SIDES OF SAID FRAME WITH ONE SET PROJECTING FORWARDLY AND THE OTHER SET PROJECTING REARWARDLY, ANNULAR INDICIA DIALS MOUNTED ON THE PROJECTING ENDS OF SAID SETS OF SHAFTS WITH EACH DIAL HAVING A SINGLE RADIAL SPOKE AND WITH THE ENDS OF SOME SHAFTS PROJECTING THROUGH THE ANNULAR SLOT IN ADJACENT DIALS AND WITH THE DIALS IN EACH SET OVERLAPPING, PINIONS ON THE PROJECTING FRONT ENDS OF ONE SET OF SHAFTS, RACK BARS SLIDABLY GUIDE ON THE FRONT SIDE OF SAID DIAL FRAME AND MESHING WITH SAID PINIONS, SAID RACK BARS BEING INCLINED IN DOWNWARDLY CONVERGING RELATION TOWARD THE TRANSVERSE POSITION OF SAID PIVOT, A SERIES OF CRANKS ROCKABLY SUPPORTED IN SAID MACHINE BEHIND SAID DISKS AND EACH CONNECTED TO ONE OF SAID DISKS BY A LINK FOR OSCILLATION THEREBY, ANGULARLY OFF-SET ARMS ON SAID CRANKS CONVERGING TO POSITIONS CENTRALLY OF SAID MACHINE UNDER SAID RACK BARS, PUSH SPRINGS CONNECTED BETWEEN THE ENDS OF SAID RACK BARS AND THE CONVERGED ENDS OF SAID CRANK ARMS BY ADJUSTABLE CONNECTIONS HAVING LINKS WITH PROJECTING EARS THREADED INTO SAID SPRINGS AND PIVOTED ON SAID CRANK ARMS, TRANSVERSE RACKS SUPPORTED BETWEEN THE FRONT AND BACK OF SAID DIAL FRAME, PINIONS OF SAID SHAFTS MESHING WITH SAID RACKS TO SIMULTANEOUSLY ACTUATE SAID DIALS ON THE FRONT AND BACK OF SAID DIAL FRAME IN INVERTED POSITIONS OF THE DIALS, A LOCK-OUT YOKE MEMBER HAVING A CROSS BAR ENGAGEABLE WITH THE TEETH OF SAID RACKS, A CONTROL MEMBER IN THE FORM OF A STIFF SPRING CONNECTED TO RAISE AND LOWER SAID LOCK-OUT MEMBER, A SPRING BIASING SAID CONTROL MEMBER TO RACK RELEASING POSITION, A LEVER PIVOTED ON THE SIDE OF SAID MACHINE AND CONNECTED TO SAID CONTROL MEMBER, A CRANK OSCILLATABLE WITH SAID MAIN SHAFT AND ENGAGEABLE WITH SAID LEVER IN THE ADVANCED POSITION OF SAID MAIN SHAFT TO MOVE SAID LEVER AND LOCK-OUT MEMBER TO RACK LOCKING POSITION, A HOLDING CRANK MEMBER SPRING BIASED INTO HOLDING ENENGAGEMENT WITH SAID LEVER IN THE RACK LOCKING POSITION OF SAID LEVER, A ONE WAY DRIVING LINK PIVOTED ON SAID HOLDING CRANK AND ENGAGEABLE WITH SAID CRANK ON SAID MAIN SHAFT AT THE START OF ADVANCING MOTION OF THE MAIN SHAFT CRANK TO RELEASE SAID HOLDING CRANK WHEREBY SAID RACKS ARE RELEASED FOR MOVEMENT DURING ADVANCING MOTION OF SAID MAIN SHAFT, AND A LOCK PIVOTED ON THE SIDE OF SAID MACHINE AND MOVABLE INTO BLOCKING ENGAGEMENT WITH SAID LEVER UPON ACTUATION OF SELECTED TOTAL TAKING MECHANISM OF THE MACHINE INDEPENDENTLY OF SAID HOLDING CRANK. 